This long poche-chief is perfect for a 500ml PET bottle. The towel material absorbs water droplets, so you can rest assured when putting it in your bag♪ [Other uses besides a PET bottle cover] ◎ Use it as an eye pillow by putting in a cold pack or a warmer ◎ As an etiquette case ◎ As a small case for storing cosmetics for touch-ups☆ Thank you very much.